I have no clue pls help urgent: Davis wants to buy 9 bars of chocolate but is short of $ 2.50...

Kaveraa

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Davis wants to buy 9 bars of chocolate but is short of $ 2.50
If he buys 2 bars of chocolate he will have $5.20 left. How much does each bar of chocolate cost?

Pls help
 
Davis wants to buy 9 bars of chocolate but is short of $ 2.50
If he buys 2 bars of chocolate he will have $5.20 left. How much does each bar of chocolate cost?

What are your thoughts? What have you tried? Where are you getting stuck? ("Read Before Posting")

For instance, you know that he wants nine boxes. After the first two boxes, he's got $5.20 left. If he tried to buy the remaining seven boxes, he'd be $2.50 short. Then how much does it cost for the remaining seven boxes? Then how much is one box?
 
Let x = cost of each candy bar
How much money does Davis starts with??
If he buys 2 bars of chocolate he will have $5.20 left. So he starts off the day with 2x + $5.20
Davis wants to buy 9 bars of chocolate but is short of $ 2.50. So he starts the day off with 9x-2.50.
Continue from here....
 
What are your thoughts? What have you tried? Where are you getting stuck? ("Read Before Posting")

For instance, you know that he wants nine boxes. After the first two boxes, he's got $5.20 left. If he tried to buy the remaining seven boxes, he'd be $2.50 short. Then how much does it cost for the remaining seven boxes? Then how much is one box?
You explained that very nicely!
 
Hello Kaveraa. First, formulate the two variables:
-> c: Price of chocolate in dollars
-> m: money in dollars

Then use these variables to describe the situation:
(I) "... buy 9 bars of chocolate but is short of $ 2.50 ..."

(II) "... buys 2 bars of chocolate he will have $5.20 left ..."

Now you have a system of equations with two equations and two unknowns, which is easy to solve.

What are the equations and what is the result?

Mathematical greetings from Leonie
 
Davis wants to buy 9 bars of chocolate but is short of $ 2.50
If he buys 2 bars of chocolate he will have $5.20 left. How much does each bar of chocolate cost?

Pls help
almost a month has gone by and OP is AWOL. Following up from response #5
(i) 2*C + 5.20 = m = 9 * C - 2.50

5.20 + 2.5 = 9*C - 2 *C

7.70 = 7 * C

C = 1.1

Each bar of chocolate costs $ 1.10.

check

(i)2*C+5.2 =2*1.1+5.2 =2.2+5.2=7.40 (=m)
(2)9*C-2.5=9.9-2.5=7.4=m...checks
 
Davis wants to buy 9 bars of chocolate but is short of $ 2.50
If he buys 2 bars of chocolate he will have $5.20 left. How much does each bar of chocolate cost?

Pls help
Davis wants to buy 9 bars of chocolate but is short of $ 2.50
If he buys 2 bars of chocolate he will have $5.20 left. How much does each bar of chocolate cost?

Okay, let's break this down step-by-step:

1. Davis wants to buy 9 bars of chocolate but is short $2.50.
2. If he buys 2 bars of chocolate, he will have $5.20 left.

To find the cost of each bar of chocolate, we need to:
1. Calculate the total cost of 9 bars of chocolate
2. Calculate the total cost of 2 bars of chocolate
3. Use the difference to find the cost of each bar

## Step 1: Calculate the total cost of 9 bars of chocolate
* Davis is short $2.50, so the total cost of 9 bars must be $2.50 more than he has.
* Let's call the cost of each bar 'x'
* Total cost of 9 bars = 9x
* Total cost of 9 bars = $2.50 more than he has
* So 9x = Amount he has + $2.50

## Step 2: Calculate the total cost of 2 bars of chocolate
* If he buys 2 bars, he has $5.20 left
* So the total cost of 2 bars must be the amount he had minus $5.20
* Total cost of 2 bars = Amount he had - $5.20

## Step 3: Use the difference to find the cost of each bar
* Total cost of 9 bars - Total cost of 2 bars = Cost of 7 bars
* 9x - (Amount he had - $5.20) = 7x
* Solving for x, we get x = $0.80

Therefore, each bar of chocolate costs $0.80.
 
Therefore, each bar of chocolate costs $0.80.
Did you check your answer, or compare it to the previous post that gives a checked answer?

If you are going to give complete answers, you need to make sure you are right.
 
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